ok. 10-year-old sammy sparks of lafayette parish, louisiana, showed up at his elementary school this morning covered in blood. when police got to his house, they found that his parents, charlie and alison sparks, were missing. well, forensics indicate that at least one of them was injured, and by the looks of it, it was pretty severely. has there been a ransom demand? there's been no communication whatsoever. then why call in the bau? new orleans is hoping we can interview sammy. no one's talked to the witness yet? i don't understand. if sammy was covered with blood, there's a good chance he could identify the unsub. sammy's autistic. getting him to tell us what happened isn't gonna be easy. captioning made possible by abc studios, llc and cbs, inc. because all these whole grains aren't healthy unless you actually eat them ♪ multigrain cheerios. also available in delicious peanut butter. healthy never tasted so sweet. icaused by acid reflux disease, relieving heartburn, relief is at hand. for many, nexium provides 24-hour heartburn relief and may be available for just $18 a month.